php教程

WeakMap::count

(PECL weakref >= 0.2.0)

WeakMap::count — Counts the number of live entries in the map

说明

public WeakMap::count ( void ) : int

Counts the number of live entries in the map.

参数

此函数没有参数。

返回值

Returns the number of live entries in the map.

User Contributed Notes

There are no user contributed notes for this page.

CopyRight © 2008-2022 verySource.Com All Rights reserved.　京ICP备17048824号-1　京公网安备：11010502034788